Page 29, Applications of the QWOT Stack

Table of Contents

• Front Matter

• Fundamentals of Thin Film Optics
• Optical Basic Concepts

• Internal Angles in Thin Films

• Reflection

• Reflections

• Example Reflection Calculations

• Graphics for Visualization of Coating Behavior
• Reflectance as Vector Addition

• Reflectance Amplitude Diagram

• Admittance Diagram

• Electric Field in a Coating

• Admittance versus Reflectance Amplitude Diagrams

• Triangle Diagram

• Behavior of Some Simple AR Coating Types
• Single-Layer Antireflection Coating

• Two-Layer AR Amplitude Diagram Example

• Wavelength Effects

• Broad-Band AR Coating

• Two V-Coat Possibilities

• Index of Refraction Simulations and Approximations
• Effective Index of Refraction

• Complex Effective Index Plot

• Simulating One Index with Two Others

• Herpin Equivalent Layers

• Approximations of One Index with Others

• The QWOT Stack, a Coating Building Block
• QWOT Stack Reflectors

• QWOT Stack Properties

• Width of the Block Band

• Applications of the QWOT Stack

• Absentee Layer

• Narrow Band Pass Filter

• Optical Density and Decibels (dB)

• NBP Filter Design

• Multiple-Cavity NBP

• Rabbit Ears

• Coatings at Non-Normal Angles of Incidence
• Polarization Effects

• Wavelength Shift with Angle of Incidence

• Angle of Incidence Effects in Coatings

• Polarizing Beamsplitters

• Polarization as Viewed in Circle Diagrams

• Non-Polarizing Beamsplitters in General

• A Non-Polarizing Beamsplitter Design Procedure

• Non-Polarizing BS's Found & Rules-of-Thumb

• Coatings with Absorption
• Various Metals on Triangle Diagrams

• Chromium Metal Details

• A Design Example Using Chromium

• Potential Transmittance

• Understanding Behavior and Estimating a Coating's Potential
• Estimating What Can Be Done Before Designing

• Effects of Last Layer Index on BBAR Coatings

• Effects of Index Difference (H-L) on BBAR Coatings

• Bandwidth Effects on BBAR Coatings

• Bandwidth Effects Background

• Estimating the R_ave of a BBAR

• Estimating the Minimum Number of Layers in a BBAR

• Bandpass and Blocker Coatings

• Mirror Estimating Example Using ODBWP

• Estimating Edge Steepness in Bandpass Filters

• Estimating Bandwidths of Narrow Bandpass Filters

• Blocking Bands at Higher Harmonics of a QWOT Stack

• Insight Gained from Hypothetical Cases
• “Step-Down” Index of Refraction AR Coatings

• Too Much Overall Thickness in a Design

• Inhomogeneous Index of Refraction Designs

• Possibility of Synthesizing Designs
• Fourier Concepts

• Fourier Background

• Fourier Examples

• Fourier Limitations

• Designing Various Types of Coatings
• Designing a New Coating

• Designing BBAR Coatings

• Tails in BBAR Coatings

• Designing Edge Filters, High Reflectors, Polarizing and Non-Polarizing Beamsplitters

• Designing Beamsplitters in General

• Designing to a Spectral Shape & Computer Optimization

• Performance Goals and Weightings

• Constraints

• Global vs. Local Minima

• Some Optimizing Concepts

• Damped Least Squares Optimization

• Needle Optimization

• Flip-Flop Optimization

• Appendix
• Equation Summary

• Back Matter